Insulator.



K. BRUGHSALER.

INSULATOR.

APPLICATION FILED MAY 5, 1913.

1,080,257. Patented Dec. 2, 1913.

WITNESSES: INVENTOR To all whom it may Camera:

UNITED STATES- KABL BRU'GHSALER, OF SAN FRANCISCO, CALIFORNIA.

INSULATOR.

Specification of Letters Patent.

Patented Dec. 2, 1913.

Application 111m m 5, 1913. Serial no; 705,553.

'Be it known that I, KARL Bnuonsanan, a subject of the Emperor of Germany, residing in the city and county of San Francisco and State of California, have invented new and useful Improvements in Insulators, of

which the following is a specification.

This invention relates to insulators and' particularly to an insulator combined with means for preventing the accidental loosening and displacement thereof from position after installation.

The object of this invention is to provide a self-retaining insulator, designed to remain permanently in position when installed, unless intentionally removed.

The invention consists of the parts and the construction and combination of parts 7 as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a perspective of the preferred form of insulator. Fig. 2 is a side elevation of a modified form of the device. Fig. 3 is a plan view of the tongue of Fig. 2.

In electrical installations porcelain or other material bushings or insulators, as 2, are inserted in the structural members A of the building or structure being wired.

These bushings are usually simple tubes inserted in larger holes in the members and frequently shake out of position and slide along the inclosed wire. To prevent this I provide a bushing having secured or attached thereto a flexible strip or tongue 3, preferably attached at one end, as 4, to the tube and extending freely and longitudinally of the same and lying close to the surface thereof so as to ass readily into the hole into which the tu e is to be inserted.

When the tube has been positioned in the timber or other part so that the shoulder 5 abuts the same on one side, then the mechanic simply bends up from the opposite projecting end of the tube the adjacent part of the bendable tongue 3 and turns the same against the contiguous surface of the structural part. Thus the front shoulder 5 and the up-turned end of the tongue 3 cooperate, by engagement with adjacent suzc- 53 1:

faces of the structural part, to preyent end .wise slippage of the tube.

In Fig. 2 is shown a modified form of the invention, in which I have provided tongue 10 having at one end 'a pair of rings 11 and 12 designed to approximately'fit the opposite sides of the shoulder 5 of the tube 2. In applying this formof my invention the tube is passed through the eye 11 until the shoulder seats thereon, then the eye 12 is bent over the end of the shoulder and the tongue 10 bent close and parallel to the body of the tube. r

H aving thus described my invention, what I claim and desire to secure by LettersPatcut is 1. An insulating tube of the character described, having a tubular body, a support having an opening in which the tube fits, a conical enlargement at one end of the tube, and a bendable strip secured to the conical end and having the opposite end turnable at right angles against the support.

2. An insulating tube havin a tubular body, a support throu h which it is adapted to pass, a conical hea formed on said tube, to abutagainst one side of the wood, and a bendable metal strip fixed to the tube near the enlar ed end and having its free end passing t rough the support and turnable at right angles to lock against the opposite part of the su ort.'

'3. A cylin rical insulating tube having a conical end, a locking strip having annular enlargements near one end adapted to clasp the conical end, and a body portion extending arallel with the tube, a support through w ich the tube and strip pass, said strip being bendable to lock against the side of the part in which the insulator is inserted.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

. KARL BRUGHSALER.

Witnesses:

F. E. MAYNARD,

JOHN H. Hnnnmo. 

